How many grams of Sn are there in a sample of Sn that contains 7.54×1023 atoms?

Q: How many moles of zinc, Zn, are in 1.75×1024 Zn atoms?

A: Avogadro concept: According to this concept, we know that one mole of a substance contains…

Q: How many moles of nitrogen atoms are there in 1.64 x 1023 molecules of dinitrogen trichloride,…

A: Mole can be defined as a standard unit for measuring large quantities of very small and entities…

Q: How many atoms of O there in 30.6 grams of cadmium (II) phosphate?

A: Ans : 2.79 × 1023 atoms of O

Q: How many grams of oxygen are in 19 grams of sodium bicarbonate,

A: Number of moles = mass/molar mass  Molar mass of NaHCO3 = 84.007 g/mol  Molar mass of O = 15.999…

Q: The atomic weight of chromium is 52.00 . How many moles of Cr are there in a 5.44 g sample of…

A: Here given weight of sample of chromium  =  5.44 g                   atomic weight of chromium =  52…

Q: 3.11  mL of seawater contains about 1.31×10-14  moles of gold, how many atoms of gold are in that…

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Q: How many oxygen atoms are there in 24.6 g molecules of N2O4?

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Q: How many grams would 71,934,010,495 atoms of a substance weigh if it has a molar mass of 23.7889…

A: Number of atoms = 71,934,010,495 atoms  6.02×1023 atoms = 1 mol 71,934,010,495 atoms =…

Q: Calculate the mass, in grams, of 752 atoms of cesium, Cs. (molar mass of Cs is 132.91 g)

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Q: If the rust found spread over the surfaces of a steel car body contains a total of 2.331×1023 oxygen…

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Q: What is the mass of the compound C8H18 (Mm = 114.26 g.mol-1) that contains 7.20x1022 hydrogen atoms?

A: Given :- molar mass of C8H18 = 114.26 g.mol-1  Number of H atoms = 7.20 × 1022 atoms   To calculate…

Q: How many moles of Kr are there in a sample of Kr that contains 2.74×1024 atoms?

A: The relationship between the moles and number of atoms of any element is given by  moles = number of…

Q: How many grams of F2 are there in 1.84 mol F2?

A: Given, Moles of F2 = 1.84 mol

Q: How many atoms in total are there in one molecule of Mg(NO3)2?

A: In a molecular formula, symbols of all the constituting atoms are shown along with their numbers in…

Q: How many moles of white phosphorus, P4, are in 98.40 g?

A: Molecules are made up of two or more than two atoms.We have been given white phosphorus, P4 and we…

Q: How many grams of tin are in 10.44 grams of an (oh)2 .the molar mass of an (oh)2 is 152.63g/mol

A: Answer:mass of Sn(OH)2 = 10.44 gmass of tin (Sn) = ?Note: Molar mass of Sn(OH)2 = 152.73 g/molMolar…

Q: How many molecules are there in 345.2 grams of HCl?

A: 1 mole = 6.022×1023 (Avogadro's number) The mass of one mole of molecules of a substance is called…

Q: How many moles of iodine atoms are there in a sample that consists of 1.35e+23 molecules of…

A: Mole=no of molecule÷6×1023 Mole=1.35×1023÷6×1023 Mole= 0.225 1 mole iodine elememental have 2 mole…

Q: How many moles of zinc, Zn, are in 1.35×10^24 Zn atoms?

A: Question is based on mole concept. We have to calculate number of moles of zinc.

Q: How many atoms are in 55.3 g of potassium bromite (KBrO2)?

A: Given, mass of potassium bromite (KBrO2) = 55.3 g Total number of atoms = ? Note; molar mass of…

Q: How many ATOMS of sulfur are present in 3.39 grams of sulfur tetrafluoride ?

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Q: How many moles of N are there in a sample of N that contains 2.75×1024 atoms?

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Q: How many atoms of nitrogen are there in 5.00 g N?

A: We have to predict the number of atoms of N.

Q: How many atoms of copper are there in 0.0075 g of copper?

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Q: A sugar crystal contains approximately 1.8x1017 sucrose (C12H22O11) molecules. What is its mass in…

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Q: How many moles of arsenic are there in 6.50 g of arsenic?

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Q: How many moles of P2O5 are there in 94.5 g P2O5?

A: Ratio of mass to molar mass is called as mole of substance.

Q: A sample of ethanol (C3H.OH) contains 4.2x102s hydrogen atoms. How many moles (n) of ethanol are in…

A: One mole of any substance contains 6.022×1023 particles.

Q: how many grams is a sample of Al2(SO4)3 that contains 7.97 x 10^23 oxygen atoms

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Q: Calculate the mass, in grams, of 402 atoms of lithium, Li

A: Number of moles = number of atoms/6.022 x 1023 atoms  Mass = moles x molar mass

Q: Calculate the mass, in grams, of 642 atoms of cesium, Cs. (molar mass of Cs is 132.91 g)

A: Given: The number of atoms of Cs = 642 atoms The molar mass of Cs = 132.91 g

Q: How many aluminum atoms are in 25.0 grams of aluminum oxide, Al2O3?

A: The formula of the given compound is Al2O3. One mole of Al2O3 contains two moles of Al atoms.

Q: How many grams of oxygen are in 48 grams of sodium bicarbonate, NaHCO3?

A: 1 mole = 6.022×1023 (Avogadro's number) The mass of 1 mole of atoms is called atomic mass For…

Q: how many grams are in 4.46 x 10 24 atoms of carbon?

A: Number of carbon atoms present = 4.46 x 1024 Atomic mass of carbon is 12 grams Atomic mass means the…

Q: How many atoms are there in 2.5 moles of C4H10O2?

A: To find the number of atoms in 2.5 moles of C4H10O2, we need to use Avogadro's number, which is the…

Q: What is the mass of 9.455* 10^-3 mol of P4?

A: Given- Mole of P4 = 9.455 x 10-3 mole To find- Mass of P4

Q: How many O atoms are there in 87.4 moles of MnSO4?

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Q: How many atoms of Pt are present in 2.53 moles of Pt?

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Q: If a sample of N2O4 contains 19 g of nitrogen (N), how many moles of N2O4 are in that sample?

A: Since in 1 mole of N2O4 we will have 2 moles of N Hence moles of N2O4 = moles of N / 2  Since moles…

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Q: How many atoms of oxygen are there in 23.0 g of sodium nitrate?

A: Molecular formula of sodium nitrate= NaNO3  One molecule of sodium nitrate contains sodium atom = 1…

Q: How many moles of Zn are there in a sample of Zn that contains 3.14×1024 atoms? moles

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Q: How many moles of Kr are there in 39.3 grams of Kr?

A: We are given 39.3 grams of Krypton (Kr) and we need to calculate moles of Kr in this mass. Mole of a…

Q: How many moles and atoms of 40K are there in 3.29g 40K?

A: The mass of 40K is = 3.29 g The molar mass of 40K = 39.964 g/mol Moles of 40K is =? The number of…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.